KB1777: Add Standalone ESX(i) to Veeam
https://www.veeam.com/kb177720.06.2013 · In the Add Server window, select VMware vSphere. Enter a full DNS name or IP address of the standalone ESX (i) host. If an ESX (i) host is added to a vCenter Server by IP, you will need to add it to Veeam by DNS, and vice versa (see More Information in this article for details). Provide a description for future reference.
KB1777: Add Standalone ESX(i) to Veeam
www.veeam.com › kb1777Jun 20, 2013 · • Open the Virtual Machines or Files view, right-click anywhere in the inventory pane and select Add server. In the Add Server window, select VMware vSphere. Enter a full DNS name or IP address of the standalone ESX(i) host. If an ESX(i) host is added to a vCenter Server by IP, you will need to add it to Veeam by DNS, and vice versa (see More ...